In the previous lesson I presented more or less conventional information on noun endings in different cases. However the problem with Russian is that there is a rule that applies to 100 words and there are different kinds of exceptions that applied to 500 words (as it was explained to me once by the professional linguist).
I do not think it would be a smart move for you to learn all the countless rules and exceptions at this point, but I think it does make sense to give you the whole picture for information and for the future learning purpose.
I personally like my way of presenting grammar better :)
So I have created a few tables that perhaps help you more effective, according to my point of view. In these tables I also tried to organize information the way it would be absorbed and digested easily.
Russian Masculine Noun Case Endings
Musculine
Singular
Plural
Nominative Case
--
-а
-я
-ь
-й
-ий
-ей
-и
-ы, -a
Genitive Case
+а
-ы
-и
-я, -и
-я
-ия
-ья, -ея
-ей, -ев
--, -ов
Dative Case
+у
-е
-ю, -и
-ю
-ию
-ью, -ею
-ям
-ам
Accusative Case (anim.)
+а
-у
-ю
-я
-ия
-ья, -ей
-ей, -ев
--, -ов
Accusative Case (inanim.)
no change
Instrumental Case
+ом, +ем
-ой
-ей
-ем, -ём
-ем
-ием, -иём
-ьём, -еем
-ами, -ями
-ами
Prepositional Case
+е
-е
-е, -и
-е
-ье, -ее
-ах
-ах
Russian Feminine Noun Case Endings
Feminine
Singular
Plural
Nominative Case
-а
-я
-ия
-ь
-ы
-и
-ии
-ьи
Genitive Case
-и, -ы
-и
-ии
-и